*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
a{
    text-decoration: none;
    color: #000;
}
ul{
    list-style: none;
}
body{
    min-width: 1200px;
    max-width: 1920px;
    margin: 0 auto;
}
.header{
    height: 600px;
    position: relative;
    overflow: hidden;
}
.header .top{
    min-width: 1200px;
    max-width: 1920px;
    width: 100%;
    height: 70px;
    overflow: hidden;
    background-color: rgba(48, 48, 48,.8);
    position: fixed;
    top: 0;
    z-index: 100;
    padding-left: 100px;
}
.header .top .logo{
    display: inline-block;
    width: 180px;
    height: 100%;
    background: url(../images/logo.png) no-repeat center;
}
.header .top .top_nav{
    display: inline-block;
    width: 70%;
    height: 70px;
    position: absolute;
    top: 0;
    right: 0;
}
.header .top .top_nav a{
    display: inline-block;
    width: 16.6%;
    height: 100%;
    line-height: 70px;
    text-align: center;
    color: rgb(228, 228, 228);
    font-size: 18px;
    letter-spacing: 10px;
}
.header .top .top_nav a:hover{
    background-color: rgba(48, 48, 48, .5);
    text-shadow: 0 0 25px rgb(200, 255, 0);
    font-weight: 500;
}
.header .top .top_nav .active{
    color: rgb(255, 221, 146);
    text-shadow: 0 0 80px rgb(255, 221, 146);
    font-weight: 500;
}
.footer{
    height: 300px;
    background-color: rgb(19, 19, 19);
    text-align: center;
    color: #aaa;
    padding: 40px 500px;
    overflow: hidden;
    text-align: center;
}
.footer .footer_box{
    transform: translateX(-50%);
    display: inline-block;
    width: 1200px;
    height: 200px;
    position: relative;
    left: 50%;
}
.footer .footer_box .img_box{
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    overflow: hidden;
}
.footer .footer_box .img_box img:last-child{
    margin-left: 30px;
}
.footer .footer_box pre{
    position: absolute;
    top: 0;
    right: 0;
    display: inline-block;
    margin-top: 25px;
    line-height: 25px;
    text-align: left;
    font-size: 13px;
}